With Generic Scan Tool

Check Fuel Pump

Recommended special tools and equipment
- VAG1348/3A remote control with VAG1348/3-2 adapter cable
- VAG1526 or VAG1526 A hand-held multimeter
- VAG1594A connector test kit

Test requirements:
- Battery voltage at least 12 V
- Fuse in fuse holder -S228- OK (position 28)







- Relay 4 in micro-central electronics (in driver's footwell, left) OK
- Fuel filter OK
- Ignition switched off.

Test sequence
- Open cover of fuse box at left side of instrument cluster.
- Remove Fuse in fuse holder -S228- (position 28) (left row, 5th large fuse from top).







- Connect remote control connection (VAG1348/3A with adapter cables VAG1348/3-2) at right terminal of socket from Fuse in fuse holder - S228- (arrow).
- Connect alligator clip to vehicle battery B+.
- Press switch of remote control.
- Flowing noise of pump must be audible

NOTE: Fuel Pump (FP) runs quietly. Surrounding noise should be avoided during test of the Fuel Pump (FP).

If no flowing noise can be heard:
- Remove rear seat bench.
- Unscrew cover at right beneath rear seat bench

Front Wheel Drive (FWD) vehicles







- Carefully disengage and disconnect electrical 4-pin harness connector (arrow).

All Wheel Drive (AWD) vehicles







- Carefully disengage and disconnect electrical 4-pin harness connector (arrow).

Continuation for all vehicles







- Connect multimeter between terminal 1 and 4 of harness connector for voltage measurement.
- Press switch of remote control.
- Specified value: approx. battery voltage

If specified value is not obtained:
- Locate and repair open circuit using wiring diagram.

If specified value is obtained, although no operating noise can be heard from pump:
- Remove fuel pump.
- Check whether electrical wires between flange and Fuel Pump (FP) are connected, and test for continuity if necessary.

If no malfunctions are found in wires:
- Fuel Pump (FP) faulty, replace fuel pump.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Readiness Code, Generating